18028880

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1259}}^1$

素因数の和:1451

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 24155920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1259, 1432, 1790, 2518, 2864, 3580, 5036, 6295, 7160, 10072, 12590, 14320, 20144, 25180, 50360, 100720, 225361, 450722, 901444, 1126805, 1802888, 2253610, 3605776, 4507220, 9014440, 18028880]

約数ペア:

[(1, 18028880), (2, 9014440), (4, 4507220), (5, 3605776), (8, 2253610), (10, 1802888), (16, 1126805), (20, 901444), (40, 450722), (80, 225361), (179, 100720), (358, 50360), (716, 25180), (895, 20144), (1259, 14320), (1432, 12590), (1790, 10072), (2518, 7160), (2864, 6295), (3580, 5036)]